FreeSBIE requires lots of disk I/O, first of all. Using tmpfs will help a lot but there are other slow part to it. Indeed, it is rare that one can create a desirable result with only a single trial. I always run FreeSBIE more than several time to create a final satificing image. For each time, FreeSBIE keeps creating same packages. That is quite waistful of time. The following patch is to solve th